Infrared factorization of tree-level QCD amplitudes at the next-to-next-to-leading order and beyond

被引：253

作者：

Catani, S ^{[1
]}

Grazzini, M

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] ETH Honggerberg, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

NUCLEAR PHYSICS B | 2000年 / 570卷 / 1-2期

关键词：

factorization; infrared singularities;

D O I：

10.1016/S0550-3213(99)00778-6

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We study the infrared behaviour of tree-level QCD amplitudes and we derive infrared-factorization formulae that are valid at any perturbative order. We explicitly compute all the universal infrared factors that control the singularities in the various soft and/or collinear limits at O(alpha(s)(2)). (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：287 / 325

页数：39

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